/*
 * ipcp.h - IP Control Protocol definitions.
 *
 * Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 *
 * Copyright (c) 1989 Carnegie Mellon University.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms are permitted
 * provided that the above copyright notice and this paragraph are
 * duplicated in all such forms and that any documentation,
 * advertising materials, and other materials related to such
 * distribution and use acknowledge that the software was developed
 * by Carnegie Mellon University.  The name of the
 * University may not be used to endorse or promote products derived
 * from this software without specific prior written permission.
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
 * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
 *
 * $Id: ipcp.h,v 1.13 1999/03/02 05:35:09 paulus Exp $
 */

/*
 * Options.
 */
#define CI_ADDRS        1       /* IP Addresses */
#define CI_COMPRESSTYPE 2       /* Compression Type */
#define CI_ADDR         3

#define CI_MS_DNS1      129     /* Primary DNS value */
#define CI_MS_WINS1     130     /* Primary WINS value */
#define CI_MS_DNS2      131     /* Secondary DNS value */
#define CI_MS_WINS2     132     /* Secondary WINS value */
#define CI_SUBNET       144     /* Bogus subnet option */

#define MAX_STATES 16           /* from slcompress.h */

#define IPCP_VJMODE_OLD 1       /* "old" mode (option # = 0x0037) */
#define IPCP_VJMODE_RFC1172 2   /* "old-rfc"mode (option # = 0x002d) */
#define IPCP_VJMODE_RFC1332 3   /* "new-rfc"mode (option # = 0x002d, */
                                /*  maxslot and slot number compression) */

#define IPCP_VJ_COMP 0x002d     /* current value for VJ compression option*/
#define IPCP_VJ_COMP_OLD 0x0037 /* "old" (i.e, broken) value for VJ */
                                /* compression option*/

typedef struct ipcp_options {
    bool neg_addr;              /* Negotiate IP Address? */
    bool old_addrs;             /* Use old (IP-Addresses) option? */
    bool req_addr;              /* Ask peer to send IP address? */
    bool default_route;         /* Assign default route through interface? */
    bool proxy_arp;             /* Make proxy ARP entry for peer? */
    bool neg_vj;                /* Van Jacobson Compression? */
    bool old_vj;                /* use old (short) form of VJ option? */
    bool accept_local;          /* accept peer's value for ouraddr */
    bool accept_remote;         /* accept peer's value for hisaddr */
    bool req_dns1;              /* Ask peer to send primary DNS address? */
    bool req_dns2;              /* Ask peer to send secondary DNS address? */
    bool cflag;                 /* VJ slot compression flag */
    int  vj_protocol;           /* protocol value to use in VJ option */
    int  maxslotindex;          /* values for RFC1332 VJ compression neg. */
    u_int32_t ouraddr, hisaddr; /* Addresses in NETWORK BYTE ORDER */
    u_int32_t dnsaddr[2];       /* Primary and secondary MS DNS entries */
    u_int32_t winsaddr[2];      /* Primary and secondary MS WINS entries */
} ipcp_options;

extern fsm ipcp_fsm[];
extern ipcp_options ipcp_wantoptions[];
extern ipcp_options ipcp_gotoptions[];
extern ipcp_options ipcp_allowoptions[];
extern ipcp_options ipcp_hisoptions[];

extern char *ip_ntoa __P((u_int32_t));
extern char *tcp_flag_decode __P((int));

extern struct protent ipcp_protent;
extern bool ipcp_from_hostname;